> The below script, when executed with "so %", gives error "E117: unknown 
> function III".
> Is there any way to remedy this (given that the same script, running as 
> "vim9script" runs w/o error)?
> As a side note: the functions below are part of my .vimrc; so I'm having 
> trouble flagging the whole file as "vim9script"...
> ======================= 
> def III(hx: string): string
>    return hx
> enddef
> 
> def DDD(hx: string): string
>    return hx
> enddef
> 
> def SSS()
>    echo III("HALA")
>    echo DDD("HULU")
> enddef
> 
> call SSS()
> =======================

It would work best to put "vim9script" in the first line.  But if you
don't want that, prefix "g:" to the function names in SSS().  Since this
is a legacy script, functions are defined in the global namespace by
default.  But in a :def function prefixing "g:" is required for using a
global function.

-- 
BROTHER MAYNARD: Armaments Chapter Two Verses Nine to Twenty One.
ANOTHER MONK:    And St.  Attila raised his hand grenade up on high saying "O
                 Lord bless this thy hand grenade that with it thou mayest
                 blow thine enemies to tiny bits, in thy mercy. "and the Lord
                 did grin and people did feast upon the lambs and sloths and
                 carp and anchovies and orang-utans and breakfast cereals and
                 fruit bats and...
BROTHER MAYNARD: Skip a bit brother ...
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

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